CN100424134C - Flame-retared modified asphalt mixed stock - Google Patents
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Abstract
The present invention relates to bituminous mixture, particularly to modified bituminous mixture which is suitable for paving a road surface in a vehicular tunnel and has a flame retardant effect. The bituminous mixture is composed of 1 to 10 shares of fire retardant bitumen and 80 to 95 shares of rubble mineral powder, wherein the fire retardant bitumen comprises 20 to 40% of modified bitumen, 2 to 30% of halogen combustion adjuvant, 2 to 4% of phosphorus-containing inorganic compound, and 10 to 20% of a smoke-repressing agent; the rubble mineral powder is mixture composed of 60 to 80% of rubble with the grain diameter of 4.75 to 13.2mm, 9 to 25% of machine-made sand with the grain diameter of 0.05 to 4.75mm, and 7 to 18% of mineral powder. Compared with common bitumen, the characteristics of high-temperature performance, antiaging performance, temperature sensing performance, etc. of the tunnel bitumen road surface paved by the bituminous mixture are raised greatly. The strength and the stability are also improved, and the flame retardant effect and the smoke repressing effect are obvious.
Description
Technical field
The present invention relates to asphalt, particularly a kind of modified asphalt mixture that is applicable to the risen flame retardant effect of paving in the vcehicular tunnel.
Background technology
Be accompanied by the fast development of China's motorway, the quantity of vcehicular tunnel is also in continuous increase.Vcehicular tunnel is as a special road section of highway, length does not wait to several kilometers from hundreds of rice, imagination is at this special road section, in case the automobile circuit fire takes place, automobile goods fire and traffic accident car collision, goods automobile (particularly tank wagon) are overturned the fire that causes, phenomenons such as smog is big, temperature is high, smoke evacuation is difficult, evacuation is difficult, fire attack difficulty can occur, its consequence is hardly imaginable.A lot of these class accidents had taken place in China and foreign countries' highway circle, suffered heavy losses.This shows,, should do one's utmost from all kinds of disaster hidden-troubles of source elimination based on strick precaution for the fire safety problem of vcehicular tunnel.
At present, domestic most of tunnel road surface generally adopts cement concrete or pitch to mat formation, though to a certain extent, the relative bituminous concrete pavement of cement concrete pavement is better than bituminous concrete pavement at aspects such as water tolerance, the feature of environmental protection, and can also avoid obnoxious flavour that pitch comes out to harm that human body caused when mating formation.But, according to domestic and international many studies show that, advantages such as cement concrete has been difficult to satisfy the requirement on road surface in the modern tunnel, and bituminous concrete pavement is comfortable with its driving, noise is little, airborne dust is few, easy to maintenance are widely used, and are the major project materials that is used for the road road construction at present.
The same with most of synthetic polymers, pitch has combustibility in air, along with its as the widespread use of material of construction on engineering, just progressively rise by the danger of the fire that it caused.Especially as long pavement material apart from road surface in the tunnel, in case vehicle fire takes place, bituminous pavement also can be on fire simultaneously or be generated dense smoke, thereby in the difficulty that has increased the weight of fire and personnel escape virtually.For example, the second in the world long tunnel Switzerland St.Gotthard Tunnel fire disaster tragic incident, because the on-the-spot various a large amount of toxic gases that discharge without the material combustion of fire-retardant finish that use, thereby making the very fast at short notice death by suffocation of people, number is 41 people nearly.
In order to solve the tunnel fire proofing problem, at present, people reduce the combustibility of bituminous pavement in the tunnel by taking two kinds of different modes.A kind of is to add flame-retardant additive in bituminous concrete, by in itself and the pitch during flammable organic compound burning institute decompose and produce material and react, thereby slow down or stop the incendiary chain reaction, reach fire-retardant purpose.Another kind is to adopt to smear the back-fire relief heat-resistant coating on the supercrust of asphalt concrete pavement, plays the fp effect by isolating blacktop.
People such as Li Zuwei, Chen Huiqiang is at " research of flame-retardant pitch modification technology and fire retardant mechanism thereof " (2002, " Changsha Traffic College journal ", Vol.18, No.4, P.44-47) in, according to special environment for use in be correlated with both at home and abroad modern technique and the tunnel, proposed the technical requirements of tunnel pavement, and studied asphalt flame-retardant modification technology and its fire retardant mechanism of suitable tunnel pavement.Its relevant flame-retarded technology mainly is by add halogenated flame retardant and inorganic metal compound fire retardant in bituminous concrete, utilize halogenated flame retardant that decomposition reaction at high temperature takes place and discharge HX (X represents halogen system), radical generation chain reaction in HX and the flame, radical concentration is reduced, thereby slow down or stop the incendiary chain reaction, reach fire-retardant purpose; Inorganic metal compound is heated to certain temperature and can decomposes, and generates water, and this reaction itself is exactly thermo-negative reaction, and the water that reaction is generated also can absorb a large amount of heat, thereby reduced the temperature of system, delayed the bituminous decomposition, reached fire-retardant purpose.To a certain extent, though the mutual synergistic effect of halogenated flame retardant and inorganic metal compound fire retardant can play tangible flame retardant effect, it is relatively poor that but the thermostability of halogenated flame retardant and smoke-suppressing all compare, inorganic metal compound wants to reach the ideal flame retardant effect, must strengthen its loading level, and loading level is strengthened, must cause pitch mixing, mobile poor during moulding, the processing of material and mechanical property are descended.
Patent of invention 95117026.0 also discloses a kind of fp petroleum asphalt felt, and it is to add fire retardant such as ammonium phosphate (or ammonium sulfate), magnesium hydroxide and linking agent such as tetramethyl-thiuram disulfide in pitch simultaneously.Prepared asphalt felt can play anti-fire action.But it mainly is to be applied in the roof as water-proof material, is not applied on the road surface.
Patent of invention 92105725.3 also discloses a kind of non-combustible asphalt, malthoid, its production method is to apply fire protection flame retarding heatproof chemical industry medicines such as sodium bicarbonate in pitch, smeared one deck back-fire relief heatproof masking liquid above the malthoid that makes, thereby be applied in above the building materials, can effectively prevent fires,, this asphalt felt seldom is applied on the tunnel road surface.Though prepared non-combustible asphalt has certain flame retardant effect, but smoke suppressing effect is not clearly.
After the ratio of other materials is determined, the content of breeze also has very big influence to the performance of itself in the compound, if low excessively, not only can reduce the asphalt degree of compactness, also can cause the reduction of intensity and stability simultaneously owing to mineral aggregate and the interactional specific surface minimizing of pitch.U.S. Pat 4659381 discloses a kind of antiflaming asphalt mixture, and it is by adding at least a halogenated flame retardant and at least a phosphorated mineral compound in modifying asphalt, as ammonium phosphate or red phosphorus, reaching the purpose of fire protection flame retarding.Though to a certain extent, it can satisfy the particular requirement of modern fire prevention tunnel road surface preferably, because it has adopted inert filler as weighting agent, when compound composition stability of structure was used for highway fire prevention tunnel road surface, effect was not fine.
During presence of fire, cigarette is to produce at first and the most fatal factor, and according to statistics, death toll has 80% to be due to cigarette suffocates in the fire.And in the middle of the existing flame-retarded technology, but seldom have " fire-retardant " and " pressing down cigarette " are mentioned in the same breath, moreover for some superpolymer, it is more even more important than " fire-retardant " " to press down cigarette ", especially the fire retardant of Halogen system is the main source that is fuming of smog, so, can develop a kind of can either be fire-retardant, the efficient flame-retarding agent that can press down cigarette again is the main direction and the trend of industry development from now on.
Summary of the invention
In order better to bring into play fire retardant, modifying asphalt and the effective synergy of other composition materials in asphalt, make " fire-retardant " of fire retardant better simultaneously with " pressing down cigarette " synergy, the present invention discloses a kind of Fire-retardant modified asphaltum mixture on the basis of existing technology, is made up of fire-retardant modified asphalt and rubble mineral powder mixed material two portions.Wherein, fire-retardant modified asphalt comprises: the hydrate of modifying asphalt, halogenated flame retardant, phosphorated mineral compound, metal oxide, nitrogenous amino fire-retardant and press down fumicants etc.; The rubble mineral powder mixed material is the rubble of 4.75～13.2mm, the machine-processed sand of 0.05～4.75mm and the mixture that an amount of breeze forms by a certain percentage.Flame-retardant pitch and rubble mineral powder mixed material are mixed according to specified proportion, after stirring is sheared evenly, mat formation and in the fire prevention tunnel, on the road surface, find that its " fire-retardant " and " pressing down cigarette " effect tool is good.
This Fire-retardant modified asphaltum mixture of the present invention, its component and content, by 100 weight parts, rubble mineral powder mixed material two portions by 1～10 part fire-retardant modified asphalt and 80～95 parts are formed, wherein, the component of fire-retardant modified asphalt comprises: the hydrate of modifying asphalt, inert filler, halogenated flame retardant, phosphorated mineral compound, metal oxide and nitrogenous amino fire retardant and but fumicants.
Than plain asphalt, modifying asphalt has all obtained corresponding raising in ductility, elasticity, temperature sensitivity and viscosity etc.Therefore, the present invention adds asphalt modifier in this employing and realizes above-mentioned performance in plain asphalt, and available asphalt modifier has thermoplastic elastomer and Resins, epoxy.Thermoplastic elastomer can be SBS, SIS or SEBS; Resins, epoxy preferably contains two epoxy group(ing), dihydroxyphenyl propane class diepoxypropyl ether for example, the diepoxypropyl ether of polypropylene glycol, the bis-epoxy propyl diester of phthalic acid, and the affixture of dihydroxyphenyl propane olefin oxidation.During preparation, adopt the high speed shear Mixingemulsificationmachine, earlier with plain asphalt dehydration 30min under 110 ℃, be warmed up to 175 ℃, and then properties-correcting agent joined in the pitch to stir in proportion shear 15min and get final product, in order to make the pitch after the modification can reach desired effects, the addition of thermoplastic elastomer in pitch is 5～18%, preferably can be 6～15%; The consumption of Resins, epoxy is 20%～40%, preferably 20～30%.As the important component part of flame-retardant pitch, modifying asphalt content therein is 20～40%.
Filler is as a part indispensable in the asphalt, to the good and bad important influence of the performance of asphalt, flame-retardant pitch component of the present invention adopts inert filler to come enhancing modified bituminous characteristic at this, and selected inert filler can be selected from wherein at least a kind of of perlite, mica powder, aluminum oxide, glass fibre, lime carbonate, magnesiumcarbonate, tripoli and carbon black.It is added in the flame-retardant pitch, and content is 20～30% of pitch weight.For itself and other components of flame-retardant pitch are mixed preferably, inert filler is divided into small-particle, and its median size is between 50～300um.
As the necessary component in the flame-retardant pitch, the flame retardant effect of selection of fire retardant and product is closely related, the present invention selects the hydrate of halogenated flame retardant, phosphorated mineral compound, metal oxide and nitrogenous amino fire retardant acting in conjunction for use at this, make several different fire retardants that synergy mutually take place, produce the effect of 1+1＞2, play better fire-retardant effect.Contain the introducing of nitrogen combustion inhibitor simultaneously, reduced the consumption of poisonous halogenated flame retardant, the consistency of pitch and fire retardant obviously improves, and has reduced the generation of segregation phenomenon.
Specifically, selected halogenated flame retardant can be selected from the Polybrominated biphenyl oxide compound, as the decabromodiphynly oxide oxide compound; Many bromobenzenes, as 2,3,4,5,6-pentabromo-ethylbenzene; Many bromines hexichol oxycompound, as 1,2-diethyl 2,4,6-tribromophenoxy compound; The adjacent dicarboximide of many bromobenzenes is as tetrabromophthalic anhydride; Many bromines cyclodecane as hexabromo cyclodecane etc., is added on halogenated flame retardant in the flame-retardant pitch, and weight percent accounts for 2～30% of asphalt, and if between 5～10% effect more;
The hydrate of metal oxide is used in not only can be fire-retardant in the pitch, can also press down cigarette, at this, the hydrate of metal oxide of the present invention can be wherein at least a kind of such as the Trihydrate of aluminium, the hydrate of lime borate, the hydrate of barium borate, the hydrate of zinc borate, magnesian hydrate, and their shared weight percents in flame-retardant pitch are 0～20%.
The phosphorated mineral compound can be selected from: primary ammonium phosphate, Secondary ammonium phosphate, triammonium phosphate, ammonium polyphosphate and red phosphorus is at least a kind of wherein.Their shared weight percents in flame-retardant pitch are 1～5%, preferred 2～4%.
Nitrogenous amino fire retardant mainly is meant trimeric cyanamide and derivative thereof, together with use, can give the preferable overall equilbrium of fire retardant material at aspects such as performance, environmental protection and prices with itself and phosphorus flame retardant.Their weight percent shared in flame-retardant pitch is 2～5%.
Thermal decomposition product and products of combustion when smog is mainly derived from burning, in order to reduce a large amount of smog that produced when superpolymer burns, the present invention takes to add in antiflaming asphalt mixture and presses down fumicants.Optionally pressing down fumicants mainly is metallic compound, comprising: molybdenum compound, vanadium compound, silicon compound and lime carbonate, potter's clay, hydrated aluminum oxide and hydrated magnesium.Can reach the ideal smoke suppressing effect, depend on the size that presses down fumicants surface-area that particle forms, particle size range be usually between 0.1～2um preferably.As the important composition of antiflaming asphalt mixture, pressing down the shared therein weight percent of fumicants is 10～20%.
In addition, as the important component part of Fire-retardant modified asphaltum mixture of the present invention, the rubble mineral powder mixed material by 60～80% particle diameter be in the 4.75-13.2mm scope rubble, 9～25% particle diameter be the mixture that machine-processed sand in the 0.05-4.75mm scope and 7～18% breeze are formed.They and fire-retardant modified asphalt are formed antiflaming asphalt mixture of the present invention by the specified proportion mixed together.
Wherein, the shared weight percent of the rubble of particle diameter in 9.5～13.2mm scope is 35%～50%, the shared weight percent of the rubble of particle diameter in 4.75～9.5mm scope is 25～40%, the machine-processed sand shared weight percent of particle diameter in 2.36～4.75mm scope is 1%～5%, the machine-processed sand shared weight percent of particle diameter in 0.05～2.36mm scope is 8%～20%, the content of breeze is 7%～18%, during preparation, just simply with the rubble of all kinds of different-grain diameter scopes, machine-processed sand and breeze in proportion uniform mixing get final product.
At last, when preparation antiflaming asphalt mixture of the present invention, at first in the high speed shear Mixingemulsificationmachine, matrix pitch is descended dehydration 30～40min at 120 ℃, be warmed up to 176 ℃, add asphalt modifier, shear 20～30min, add fire retardant again, press down fumicants and other components, mix and shear 10～25min, add the rubble mineral powder mixed material at last, shear agitation gets final product until stirring.
Compare with modern technologies, Fire-retardant modified asphaltum mixture of the present invention, not only on characteristics such as high-temperature behavior, ageing resistance and temperature-sensitive performance, improve a lot than plain asphalt, and on intensity and stability, also have some improvement, with its mat formation be applied in the fire prevention tunnel road surface on, " fire-retardant " and " pressing down cigarette " effect of finding it is very obvious, and Drawing abillity also is significantly improved simultaneously.
Embodiment
Below set forth beneficial effect of the present invention particularly by several embodiment:
Embodiment 1: a kind of Fire-retardant modified asphaltum mixture, by 100 weight parts, contain 10 parts of flame-retardant pitchs and 90 parts of rubble mineral powder mixed material, wherein, fire-retardant modified asphalt uses epoxy resin modification, the fire-retardant modified asphalt and the rubble mineral powder mixed material that prepare are mixed in proportion, just can form described Fire-retardant modified asphaltum mixture.Wherein,
(1) component of flame-retardant pitch and content are: (table 1)
Table 1: the component of flame-retardant pitch and content
When preparing above-mentioned flame-retardant pitch, at first by the preparation of high speed shear Mixingemulsificationmachine, with matrix pitch dehydration 30min under 120 ℃, be warmed up to 176 ℃, the bis-epoxy propyl diester that adds Resins, epoxy-phthalic acid, shear 20min, and then add fire retardant decabrominated dipheny oxide compound, ammonium polyphosphate and magnesian hydrate
And press down fumicants molybdenum dioxide, filler and other components, mix shearing 15min and get final product.
Below be the performance test to above-mentioned fire-retardant modified asphalt, use the plain asphalt that does not add fire retardant, presses down fumicants to do contrast, its every performance index are as shown in table 2 below:
Table 2: the The performance test results of fire-retardant modified asphalt
| Index name | Do not add fire retardant, press down the modifying asphalt of fumicants | Add fire retardant, pressed down the modifying asphalt of fumicants |
| 15 ℃ of penetration degree/0.1mm | 24.6 | 22.2 |
| 25 ℃ of penetration degree/0.1mm | 49.2 | 39.4 |
| 30 ℃ of penetration degree/0.1mm | 63.3 | 55.4 |
| Penetrative index PI | 1.9 | 2.2 |
| Softening temperature/℃ | 85 | 86.0 |
| Limiting oxygen index(LOI) | 19 | 25 |
| Ductility (5 ℃)/cm | 18.2 | 14.0 |
(2) component of rubble mineral powder mixed material and content: (table 3)
Table 3: the component of rubble mineral powder mixed material and content
With above-mentioned flame-retardant pitch and rubble mineral powder mixed material proportionally uniform mixing be in the same place, make Fire-retardant modified asphaltum mixture of the present invention, compare with every performance index among " asphalt highway construction technique normalizing " JTJ032-94, the result is as shown in table 4:
Table 4: epoxide modified antiflaming asphalt mixture technical feature measuring result
| Technical feature | Technical indicator | Measuring result |
| Marshall stability/kN | ＞6.0 | 8.7 |
| Flow valuve/0.1mm | 20～40(50) | 33 |
| Voidage V a/％ | 3.5～5.5 | 4.2 |
| Void in mineral aggregate VMA/% | ＞17 | 17.4 |
| Asphalt content/% | ＞5.5 | 5.8 |
| Xie Lunbao analyses leak rate/% | ＜0.2 | 0.1 |
| Superpave mix-design rate/% | ＜20 | 11.4 |
| Residual stability/% | ＞80 | 89.5 |
| Freeze thawing cleavage strength ratio/% | ＞70 | 96.2 |
| Dynamic stability DS/ (inferior/mm) | ＞3000 | 3900 |
Embodiment 2: by 100 weight parts, contain 8 parts of flame-retardant pitchs and 92 parts of rubble mineral powder mixed material, wherein, fire-retardant modified asphalt uses the SBS modification, and fire-retardant modified asphalt and the rubble mineral powder mixed material for preparing is mixed in proportion the formation Fire-retardant modified asphaltum mixture.Wherein,
(1) component of flame-retardant pitch and content are: (table 5)
Table 5: the component of flame-retardant pitch and content
The preparation method of similar the foregoing description 1 does contrast with the flame-retardant pitch of preparation and the pitch that does not add fire retardant, press down fumicants, and every performance index are as shown in table 6 below:
Table 6: the The performance test results of fire-retardant modified asphalt
| Index name | Do not add fire retardant, press down the modifying asphalt of fumicants | Add fire retardant, pressed down the modifying asphalt of fumicants |
| 15 ℃ of penetration degree/0.1mm | 23.6 | 19.5 |
| 25 ℃ of penetration degree/0.1mm | 48.5 | 39.2 |
| 30 ℃ of penetration degree/0.1mm | 64.3 | 53.1 |
| Penetrative index PI | 1.8 | 2.3 |
| Softening temperature/℃ | 86 | 84.8 |
| Limiting oxygen index(LOI) | 19 | 23 |
| Ductility (5 ℃)/cm | 20.2 | 21.0 |
(2) component of rubble mineral powder mixed material and content:
Rubble is selected component identical with table 3 and content for use with mineral powder mixed material:
With above-mentioned flame-retardant pitch and rubble mineral powder mixed material proportionally uniform mixing be in the same place, make Fire-retardant modified asphaltum mixture, compare with the every index among " asphalt highway construction technique normalizing " JTJ032-94, the result is as shown in table 7:
Table 7: Fire-retardant modified asphaltum mixture technical feature measuring result
| Technical feature | Technical indicator | Measuring result |
| Marshall stability/kN | ＞6.0 | 8.0 |
| Flow valuve/0.1mm | 20～40(50) | 32 |
| Voidage V a/％ | 3.5～5.5 | 5.0 |
| Void in mineral aggregate VMA/% | ＞17 | 17.5 |
| Asphalt content/% | ＞5.5 | 5.7 |
| Xie Lunbao analyses leak rate/% | ＜0.2 | 0.1 |
| Superpave mix-design rate/% | ＜20 | 13.4 |
| Residual stability/% | ＞80 | 87.4 |
| Freeze thawing cleavage strength ratio/% | ＞70 | 84.2 |
| Dynamic stability DS/ (inferior/mm) | ＞3000 | 3800 |
Embodiment 3: by 100 weight parts, form by 8 parts of flame-retardant pitchs and 92 parts of rubble mineral powder mixed material, wherein, fire-retardant modified asphalt uses the SIS modification, and fire-retardant modified asphalt and the rubble mineral powder mixed material for preparing is mixed in proportion the formation Fire-retardant modified asphaltum mixture.Wherein,
(1) component of flame-retardant pitch and content are: (table 8)
Table 8: the component of flame-retardant pitch and content
The preparation method of similar the foregoing description 1 does contrast with the flame-retardant pitch of preparation and the pitch that does not add fire retardant, press down fumicants, and its every performance index are as shown in table 9:
Table 9: the The performance test results of fire-retardant modified asphalt
| Index name | Do not add fire retardant, press down the modifying asphalt of fumicants | Add fire retardant, pressed down the modifying asphalt of fumicants |
| 15 ℃ of penetration degree/0.1mm | 25.6 | 20.5 |
| 25 ℃ of penetration degree/0.1mm | 49.0 | 40.2 |
| 30 ℃ of penetration degree/0.1mm | 66.4 | 54.2 |
| Penetrative index PI | 1.9 | 2.4 |
| Softening temperature/℃ | 88.2 | 85.6 |
| Limiting oxygen index(LOI) | 17 | 22 |
| Ductility (5 ℃)/cm | 22.4 | 23.2 |
(2) component of rubble mineral powder mixed material and content:
Rubble is selected component identical with table 3 and content for use with mineral powder mixed material:
With above-mentioned flame-retardant pitch and rubble mineral powder mixed material proportionally uniform mixing be in the same place, make Fire-retardant modified asphaltum mixture, compare with the every index among " asphalt highway construction technique normalizing " JTJ032-94, the result is as shown in table 10:
Table 10 Fire-retardant modified asphaltum mixture technical feature measuring result
| Technical feature | Technical indicator | Measuring result |
| Marshall stability/kN | ＞6.0 | 7.8 |
| Flow valuve/0.1mm | 20～40(50) | 32 |
| Voidage V a/％ | 3.5～5.5 | 4.2 |
| Void in mineral aggregate VMA/% | ＞17 | 17.2 |
| Asphalt content/% | ＞5.5 | 6.0 |
| Xie Lunbao analyses leak rate/% | ＜0.2 | 0.1 |
| Superpave mix-design rate/% | ＜20 | 13.6 |
| Residual stability/% | ＞80 | 87.2 |
| Freeze thawing cleavage strength ratio/% | ＞70 | 80.2 |
| Dynamic stability DS/ (inferior/mm) | ＞3000 | 3600 |
Claims (7)
1. Fire-retardant modified asphaltum mixture, by 100 weight parts, rubble mineral powder mixed material by 8～10 parts flame-retardant pitchs and 90～92 parts is formed, and it is characterized in that described flame-retardant pitch comprises 20～40% modifying asphalt, 2～30% halogenated flame retardant, 2～4% inorganic phosphor-contained compound, 10～20% the filler that presses down fumicants and 20-30%; The rubble mineral powder mixed material is that 60～80% particle diameter is that rubble, 9～25% particle diameter in the 4.75-13.2mm scope is the mixture that machine-processed sand in the 0.05-4.75mm scope and 7～18% breeze are formed, and described modifying asphalt is for through Resins, epoxy or thermoplastic elastomer modified pitch.
2. Fire-retardant modified asphaltum mixture according to claim 1 is characterized in that, described Resins, epoxy contains two epoxy group(ing), and thermoplastic elastomer is SBS, SIS or SEBS.
3. Fire-retardant modified asphaltum mixture according to claim 1, it is characterized in that halogenated flame retardant is Polybrominated biphenyl oxide compound, many bromobenzenes, many bromines hexichol oxycompound, the adjacent dicarboximide of many bromobenzenes, many bromines cyclodecane, chloro alicyclic compound or many bromophenols.
4. Fire-retardant modified asphaltum mixture according to claim 1 is characterized in that, presses down fumicants and is selected from wherein at least a kind of of molybdate compound, vanadium-containing compound or silicon-containing compound.
5. Fire-retardant modified asphaltum mixture according to claim 1, it is characterized in that, gross weight based on rubble and machine-processed sand, rubble by 35～50% particle diameter in 9.5～13.2mm scope rubble and 25～40% the rubble of particle diameter in 4.75～9.5mm scope formed, machine-processed sand by 1～5% particle diameter in 2.36～4.75mm scope machine-processed sand and 8～20% the machine-processed sand of particle diameter in 0.05～2.36mm scope formed; The weight percent sum of rubble and machine-processed sand is 100%.
6. Fire-retardant modified asphaltum mixture according to claim 1 is characterized in that, adds the hydrate of 0～20% metal oxide in the flame-retardant pitch.
7. Fire-retardant modified asphaltum mixture according to claim 1 is characterized in that, adds 2～5% nitrogenous amino fire retardant in the flame-retardant pitch.
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| CN101077931B (en) * | 2006-05-23 | 2011-05-11 | 深圳市海川实业股份有限公司 | Flame-proof asphalt for road and preparation method thereof |
| CN101077932B (en) * | 2006-05-23 | 2011-05-25 | 深圳市海川实业股份有限公司 | Flame-proof asphalt for road and preparation method thereof |
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| CN105733282A (en) * | 2016-03-29 | 2016-07-06 | 苏州蔻美新材料有限公司 | Smoke-inhibition modified epoxy resin asphalt and preparation method thereof |
| CN112279557A (en) * | 2020-09-14 | 2021-01-29 | 中交基础设施养护集团宁夏工程有限公司 | Special flame-retardant asphalt for tunnel and preparation method thereof |
| CN115010408B (en) * | 2022-06-07 | 2023-01-24 | 中铁四局集团第一工程有限公司 | Tunnel composite surface layer upper surface layer mixture and production method thereof |
| CN117510128A (en) * | 2023-10-25 | 2024-02-06 | 山东众甫新材料有限公司 | Flame-retardant road repairing material for mines and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430A (en) * | 1977-06-02 | 1979-01-05 | Hideo Tagawa | Composition |
| JPS61192766A (en) * | 1985-02-21 | 1986-08-27 | Asahi Rekisei Kk | Flame-retardant asphalt blend composition |
| US4786329A (en) * | 1987-09-09 | 1988-11-22 | The Dow Chemical Company | Asphalt compositions containing anti-stripping additives prepared from amines or polyamines and phosphonates |
| US5075361A (en) * | 1990-12-21 | 1991-12-24 | Texaco Inc. | Aminoacid phosphoalkylation of asphaltenes for compatibilization in bituminous liquids |
-
2003
- 2003-08-06 CN CNB031439454A patent/CN100424134C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430A (en) * | 1977-06-02 | 1979-01-05 | Hideo Tagawa | Composition |
| JPS61192766A (en) * | 1985-02-21 | 1986-08-27 | Asahi Rekisei Kk | Flame-retardant asphalt blend composition |
| US4786329A (en) * | 1987-09-09 | 1988-11-22 | The Dow Chemical Company | Asphalt compositions containing anti-stripping additives prepared from amines or polyamines and phosphonates |
| US5075361A (en) * | 1990-12-21 | 1991-12-24 | Texaco Inc. | Aminoacid phosphoalkylation of asphaltenes for compatibilization in bituminous liquids |
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| CN1580129A (en) | 2005-02-16 |
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Assignee: Shanghai KNP Chemical Co., Ltd. Assignor: Haichuan Industry Co., Ltd., Shenzhen Contract fulfillment period: 2009.8.1 to 2014.8.1 contract change Contract record no.: 2009440001386 Denomination of invention: Fire-retardant and modified asphalt mixture Granted publication date: 20081008 License type: Exclusive license Record date: 2009.9.7 |
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